US President Donald Trump addresses a news conference in the Rose Garden at the White House in Washington, US, on Apr 27, 2020. (Photo: Reuters/Carlos Barria)

WASHINGTON: US President Donald Trump said on Monday (Apr 27) that China could have stopped the coronavirus before it swept the globe and said his administration was conducting "serious investigations" into what happened.

"We're doing very serious investigations ... We are not happy with China," Trump said at a White House news conference.